Liquid dispensing apparatus



April 17, 1934. A. T. SNOW 1,955,712

LIQUID DISPENSING APPARATUS Filed May 14, 1930 2 Sheets-Sheet 1 PatentedApr. 17, 1934 PATENT OFFICE LIQUID DISPENSING APPARATUS Alfred TaylorSnow, Philadelphia, Pa., assignor to John Wood Manufacturing Company,Conshohocken, Pa., a corporation of Pennsylvania Application May 14,1930, Serial No. 452,157 I 4 Claims. (Cl. 22195) My invention relates toapparatus which may be advantageously employed in dispensing gasolenethru a flexible hose having one end connected with a stationary pumpstand and having its free end provided with a nozzle including amanually operative valve controlling the dispensation of liquidtherethru, in conjunction with means at said nozzle whereby openingmovement of the nozzle valve pulls a wire extending along the hose tooperate an electric switch in the pump stand to close the circuit of anelectric motor after more definitely specified.

In said drawings; Fig. I is an elevation of an apparatus convenientlyembodying my invention, with the hoseand its nozzle released from thehook lever, with consequent release of the means for preventing closureof said motor switch.

Fig. II is a somewhat diagrammatic elevation of a portion of saidapparatus, showing the hook T lever depressed, as by the weight of thehose and its nozzle, with consequent positioning of the device toprevent closure of said motor switch.

Fig-1H shows the switch wire gripping levers. Fig. IV is a perspectiveview of the switch safety lever.

In said figures; the pump stand includes the base 1, standards 2,platform 3, center frame 4,

standards 5, and dome 6.

The liquid to be pumped is withdrawn from a subjacent tankthru the pipe8, screen casing 9,

and pipe to the rotary pump 11 which has its casing rigidly connectedwith the lower side of said platform 3. The rotor 12 of said pump isprovided with the pulley 13 adapted to be driven by the belt 14extending around thepulley -15 on the armature shaft 16, of the electricmotor Said pump 11 is adapted to discharge the liquid thru the pipe 19,flow meter 20, and pipe 21, into the sight gage 22 from which itgravitates thru the pipe 23 into the flexible dispensing hose 24. Saidhose has, at its free end, the nozzle 25 containing the valve 26 whichis normally closed by the spring 27 but has the stem 28 engaged by thehandle lever 29 which is fulcrumed at 36-. Said handle lever normallystands in the position shown in full lines in Fig. I, with the valveshut, but when it is grasped by the operator and drawn 69 into theposition indicated in dotted lines in Fig.

I, against the nozzle handle guard 32, said valve is opened to permitthe discharge .of liquid from said sight gage 22 thru said nozzle.

The amount of liquid thus discharged is manifested by the rotary indexarm 34 which is operatively connected with said meter 20 and adapted totraverse the circular series of numbers on the dial 35 whichconveniently indicate gallons. Said motor 17 is energized by way of theconductors 37 and 38 which conveniently extend thru the stationaryconduit 39 to the switch casing 40 which is stationary in said stand 1."The evacuated tube 41, which contains the'body'of mercury 42. ismounted to tilt in said casing 40 upon the axis 43 and is "tiltable bythe switch lever 44. Said tube 41 includes the terminals 45 and 46 ofthe motor circuit which are disconnected when the switch is in the openposition shown in Fig.

II, to'which it gravitates when released. However, said terminals 45 and46 are connected, by the body of mercury 42, to close the circuit andenergize said motor 1'1 when the switch lever 44 is lifted to theposition indicated in dotted lines in Fig. II. Such lifting movement ofthe switch tube 41 may be effected by movement of the nozzle valve lever29 to open the valve 26, and as follows:

Said valve lever 29 has the wire clamping jaw 48 opposed to the wireclamping jaw 49 on the wire gripping lever 50 which is carried by saidvalve lever 29 to which it is fulcrumed at 51. The end of the switchslide wire 53 normally extends loosely in the handle guard 32 betweensaid lever jaws 48 and 49,'b ut the arrangement is such that when theoperator grasps the handle guard 32, with fingers extending in the space54, anddraws the lever 29 into the position indicated in dotted lines"in Fig. I, said wire 53 is gripped between said lever jaws 48 and 49 andpulled, contemporaneously with the opening movement of said valve 26.Said wire 53 extends through the curved tube 55 which is rigidly securedto said handle 32 by the bolt 56 and in continuation of the flexibletubular sheath 57.

Said sheath is conveniently formed of close wound, wire, extends alongthe hose 24 beneath the outer textile cover thereof, and is secured tothe hose by the clamp bands 58 and 59. Said sheath 57 registers with thecurved tube 60 which 110 is a continuation thereof secured, by the bolt61, in rigid relation with the hose coupling 63.

The end of said wire 53 extends from said tube 60 part way around and isattached to the grooved pulley 64, and is stressed by the weight 65 onsaid pulley. Said pulley is journaled in the bearing standard 66 on theplatform 6'7 which is rigidly secured in said stand 1. Said pulley 64carries the crank pin 68 in cooperative relation with the lift lever 69which is fulcrumed at 70 on said standard 66 and carries at its free endthe stud 71 which is adapted to lift said switch lever 44 when said wireis pulled as above described and with the effect of tilting said tube 41and closing the motor circuit, contemporaneously with the opening of theliquid dispensing valve 26 at the nozzle 25 of the hose 24.

In order to prevent closure of said motor switch 41 by manipulation ofthe levers 50 and 29 when it is desired that the apparatus shallbeinoperative; I provide said stand 1 with the projecting hook lever '73having the seat '74 in which said nozzle 25 may be hung, with the effectof tilting said lever '73 downward to the position indicated in dottedlines in Fig. I. Said hook lever 73 is pivotally connected by the link'15 with the safety lever 76 which is fulcrumed at '78 in the standard79 and has its free end 80 upturned and slotted to embrace said switchlever 44 and limit the movement of the latter. When said nozzle hooklever is upturned as indicated in Fig.1; said safety lever '76 is alsoupturned as indicated in said figure to permit said switch lever to bepulled up to close the circuit by manipulation of the wire 53 by thenozzle levers 29 and 50 as above described. However, when said hooklever '73 is depressed to the position indicated in dotted lines in FigI and in full lines in Fig. II; said slotted end 80 of the safety lever76 is depressed to the position shown in Fig. II, in which the switchlever 44 is at the upper end of the slot in said lever end 80 andprevented from being uplifted to close the switch by manipulation ofsaid nozzle levers 29 and 50. Operation of the motor 17 to dispenseliquid thru the hose 24 is thus prevented when the hose nozzle is in itsidle position upon said hook lever '73.

Moreover, I prefer to provide said hook lever '73 with the pendent link82 which is mounted to reciprocate in the bearings 83 in cooperativerelation with the valve 84 in the pipe 19 so as to automatically stopthe flow of gasolene from the pump 11 when said nozzle 25 is thus hungon said hook lever 73, to thus doubly insure that no gasolene may bedispensed when the nozzle is in such idle position.

Altho to comply with some ofiicial requirements, said hook lever is soconstructed and arranged that it will remain in its lowered position towhich it may be shifted by the weight of the hose, or otherwise, so thatit is necessary to uplift it manually to release the pump motorcontrolling switch; of course, said hook lever 73 may be provided with aspring or weight to thus uplift it when relieved of the weight of thehose.

I also find it convenient to extend thru said conduit 39 a pair ofconductors 85 and 86 of an electric lighting circuit controllable by thelight switch 87 which is a fixture in said stand 1. Said lightingcircuit includes the lamp 88, adapted to illuminate the dial 35, and thelamp 89 to illuminate the globe 90 to attract attention to the liquiddispensing stand 1;

However, I do not desire to limit myself to the precise details ofconstruction and arrangement herein set forth, as it is obvious thatvarious modifications may be made therein without departing from theessential features of my invention, as defined in the appended claims.

I claim:

1. In liquid dispensing apparatus; the combination with a pump; of adispensing hose connected with the discharge side of said pump; anelectric motor adapted to operate said pump; an electric switchcontrolling said motor; and means adapted to close said switch includinga pulley, a wire fastened at one end to said pulley, extending partlyaround said pulley and along said hose; a crank pin on said pulley; alever adapted to be operated by the crank pin on said pulley and inoperative relation with said switch lever; whereby traction on said wirein the direction of the flow of the liquid through said hose, partlyturns said pulley and effects closing movement of said switch by thecooperation of said crank pin on said pulley with said levers.

2. Apparatus as in claim 1; including a safety lever movable to holdsaid switch lever in open position.

3. Apparatus as in claim 1; including a safety lever movable to holdsaid switch lever in open position; and a hook lever operativelyconnected with said safety lever and adapted to be operated by hanging aweight thereon.

4. In liquid dispensing apparatus; the combination with a stationarypump stand; of a liquid dispensing pump in said stand; an electric motoroperatively connected with said pump; an electric switch adapted tocontrol the energizing circuit of said motor, and including a switchlever, normally movable to closesaid switch and energize said motor; aliquid discharge conduit in communication with said pump and including aflexible hose; a hook lever pivoted in said stand and adapted to supportsaid hose in idle position and to be depressed by the weight of saidhose in that position; and means extending from said hook lever to saidswitch lever, adapted to prevent closing movement of said switch leverwhen said hook lever is depressed by said hose; wherein the hook leveris adapted to remain in a depressed position when relieved of the weightof the hose, so that it is necessary to manually move it to release saidmotor switch.

ALFRED TAYLOR SNOW.

Ill

